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%I #9 Aug 17 2017 03:02:16
%S 1,2,10,91,1115,16740,296676,6061477,140279205,3627063606,
%T 103627063606,3242055440327,110235260819399,4047611646518688,
%U 159615707204330912,6728024062917221537,301875929242270047393,14364960381309995038402
%N a(n) = Sum_{k=0..n} (k-1)^k.
%H Sergio Silva, <a href="http://ginasiomental.no.sapo.pt/materialc/mteste/teste.htm">Teste Numerico</a> [Dead link]
%p a:=n->sum ((j-1)^j, j=0..n): seq(a(n), n=1..19); # _Zerinvary Lajos_, Dec 17 2008
%o (PARI) a(n) = sum(k=0, n, (k-1)^k); \\ _Michel Marcus_, Aug 17 2017
%K nonn
%O 1,2
%A Herman Jamke (hermanjamke(AT)fastmail.fm), Jul 13 2004
%E Offset corrected by _Michel Marcus_, Aug 17 2017
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